<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title>相对定位</title>
		<link rel="stylesheet"  type="text/css" href="css/相对定位.css">
	</head>
	<body>
		<div id="box1">
			盒子1
		</div>
		<!--
        	对盒子2进行相对定位控制
        -->
		<div id="box2">
			盒子2
		</div>
		<div id="box3">
			盒子3
		</div>
	</body>
</html>
